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A Vagrant provider for terraform.


Download the latest release for your appropriate OS and architecture and extract the archive. Then copy the binary to the terraform plugin directory.


resource "vagrant_vm" "my_vagrant_vm" {
  vagrantfile_dir = "path/to/dir"
  env = {
    KEY = "value",

vagrantfile_dir is the path to a directory where a Vagrantfile lives. The Vagrantfile must exist when terraform runs or else it will throw an error. This option defaults to ., ie, the current directory and you may set this value to absolute or relative paths.

env is a map of additional environment variables to pass to the Vagrantfile. The environment variables set by the calling process are always passed.


  • machine_names.# - a list of machine names as defined in the Vagrantfile.

  • ssh_config.# - SSH connection info. Since a Vagrantfile may create multiple machines, this is a list with the following variables:

    • ssh_config.*.type - always "ssh" for now
    • ssh_config.*.user - the user for the connection
    • ssh_config.*.host - the address to connect to
    • ssh_config.*.port - the port to connect to
    • ssh_config.*.private_key - private ssh key for the connection
    • ssh_config.*.agent - whether or not to use the agent for authentication (always "false" for now).

    If there is only one machine built by the Vagrantfile, the connection info will be set in the resource block so you can include provisioners without any additional configuration. However, if there is more than one machine, the connection info will not be set; you'll need to create some null_resources to do your provisioning.

Note that machine_names and ssh_config are guaranteed to be in the same order (ie, ssh_config[0] is the corresponding config for the machine named machine_names[0]), but the order is undefined (ie, don't count on machine_names[0] being the first machine defined in the Vagrantfile).

Forcing an Update

The easiest way to force an update is to set, or change the value of, some environment variable. This will signal to terraform that the vagrant_vm resource needs to update.

For example, if you want to force updates when your Vagrantfile changes, try something like this:

resource "vagrant_vm" "my_vagrant_vm" {
  vagrantfile_dir = "path/to/dir"
  env = {
    VAGRANTFILE_HASH = "${md5(file("path/to/dir/Vagrantfile"))}",

When the file changes, the hash will change, and terraform will ask for an update.

Removing Machines

Sadly, due to some limitations in vagrant, it's not possible to automatically remove a portion of machines from a Vagrantfile. In other words, if your Vagrantfile defines 5 machines and you remove 2 of them from the Vagrantfile, they will be left running in your vagrant provider (ie, virtualbox or whatever) with no way of removing them via vagrant (or terraform).

If you intend of removing some machines, you should manually run vagrant destroy MACHINE_NAME on those machines you wish to remove before editing the Vagrantfile. Then update your Vagrantfile and allow terraform to do the rest.

If you forget, you can manually cleanup these old VMs by launching your vagrant provider's UI and deleting the machines. Then run vagrant global-status --prune to cleanup vagrant's cache of these machines.


If terrafrom is failing on the vagrant step, you can get additional output by running terraform with logging output enabled. Try something like:

env TF_LOG=TRACE terraform apply ...

And, of course, you can always run vagrant on your Vagrantfile directly.

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